Safety device for doors



A; KELLER.

SAFETY DEVICE FOR DOORS. APPLICATION man 1AN.24,1921.

1,414,286'. 'l 10, PatenaApr.25,1922.

fr/*6996031 AjeZZef UNITEDM'STAS ABRAHAM KELLER, of@ SAN FANorsoo, foALIonNrAQ y j.

l releases.V

To aZZ whom t mayconcern:V i' v A 'Be 1t known that l, ABRAHAM ,KELLER, a

citizen ofthe United States,'residing at San Francisco, in thecounty of- San Francisco and Stateoi" California,-have invented new and useful Improvements =in Safety Devices for fDoors, ofV which the 'following is a specification.l l l v This invention relates door attachmentsand has particular refer* ence to a safety device adapted to be applied 'to various typesof doors, particularly to the doors of railway passenger coaches.

The primary object' of this invention is tov provide afsafety device of the character described which can be readily attached to a door in order to prevent the slamming of the door, which not onlyfshortens the life of vthe door and the frame structure-"but often `s-.extremity a causes injury to tothe door. y Y A., ,Y

Another object of this inventionistoproi' vide a safety device adapted vto'operate uponV a person -in close proximity movement of the door knob and whichic'an 'of thefollowing description T Y be readily'applied to' various typesl of ldoors Without materiallyl altering `the L construc- VVtion thereof;y f'

L- furtherY object to this invention tis i.to

provide' a device fof the above mentioned character which 1s simple 1n construction7 inexpensive to manufacture, easily assembled Vand' disassembled, strong, durable and'highly efficient. n e v Other objects and 'advantages oit'V the invention ,Will be apparent during the course Great annoyance hasbeen lexperienced by the repeated slamming of doors, particu- *larly those of railway passengervcoaches,

with a consequent disastrous effect not only to the door and door frame, but` oftentimes lto travellersy who have been caught in the slamming-doors. To overcome these ob-Y jections, I have devised the present safety attachment,`which will prevent a door to which it is applied from slamming, andV thereby supply a longneeded want. n

In the'accompanying drawings forming a vpart of this specification and in which like numerals are employed toV designate like parts throughout the same,

Figure 1 is a side elevation of my improved attachment'partly in section, as applied to a door, the view being taken on the line 1--1 of Figure 2,

l yS'pe'ceaticvni of Tietlters Ilatent. i

' i Y 4 A r to improvements inV @www Apr; .25. .1922. e Application meaanuary 24,1921', .ise'riaivNa-ASeA/iv; i' i Figure aise. einen @arenal '-,v'iew @finie Figure .isa sectional',Viewv of theeontrol ,i

arm V- andi its *associated "elements, V[the Q v'iew ybeing takenon the line 3+gof,:Figure.2,

f Figure-4 .isla sectional Viewtaknonfthe, c

Figure is. asectionalvi'ewwof i menty shown applied, toja proj ecting v door.`

Figure 6 is a sectionaliviewof the attgh yment as'applied on the face-pf the` doorQ-.,v

In thedrawings wherein for the purpose .of illustration is shown apreferredembodiment ofimy invention, the numeral? 10 desi 4 natesfa door equipped withan'outerfsi e body of 4thefdooris. a;square,spindle 13,

which hasprovidedvon each/extremity: the i usual knobs Ylllandealg, and vadjacent one A grooved escutcheon: sasfjdesigf natedbythenumerally. i f

gf, Suitably amounted. on ,theV dinner S side i the door is a' basesplatefl. --adaptedfto'have "Y I detachably fastened-thereto by vscrews 6'o`r othersuitable `fasteningelements, la'f-jc'asing 8O f 1615v "This casing` isbfwasngulariformationg i terminating atr4 one extremity in van,-enlarged or iared portion 19, providecl--with 'shoulkders19.` p f f l The numeral 29 and-has providecl'-the'rein va graduatedchani v nel 17: which; :leads to 4`a-straight channel, 18;' l

I designates-a'l rigid arm which .1s bifurcatedat .one extremity'` as in-l dicated by the numeral 21 and terminates at` Y the." opposite extremity; in an, enlarged `por- 90' i tion 22 having 'formedtherein,aperture 23,'

coniormin'g'to the shape of the spindle 13, in f which'aperturethe spindle isadapted to rest. It'will be: evident that aaturning of .the knob 14 will causefa lateral movement to ibefimparted tothe ,arm 4 20,? sincewthe grooved escutcheonfallowsfthe armto move "freely therein.

terial. AThe buer rod 235 and its integrallyv formed collar are adapted to move` as a unity with the arm 20 when the latter isV actuatedv upon the turning ofl the handle .14.f n.

I 11 and an innerfsidel2': 4JPenetrating..the. i

preferably made'` of elastic' or yieldingma-V c 7 The numeral 27 designates a coil spring which encircles the rod 23,.,and which hasone end thereof abutting the shoulder "and its opposite end contacting with the basevof 'the' This spring upon expansion tends buffer 26. tok throw andl retainthe buffer in the extends dpo'sition shownto advantage in Figurel, and thereby affords a means 'for preventing the slamming or closing of the door.

" @annabee-n withthe drawings, it will be read-,

YLaatzen r will Senter. ,Wint-,e :prevented from passing from the cas r When it"dsired "to close the ydoor 'and return 'thebnfe'r within the casing it is Yonly 'neeessar'y tb turnthe knee-and retain a grip 'on thesarne7 'and then the rigid arm having laterally within the graduated A'channel '17 and causev an inward longitudinal sliding movement to be impart v ed tornei 23', and atfthe 'same time 4the s'prngwin assume a contracted position.

Y Vlhen the buffer is returned within 'the "Qg", .releasing the I:grip on the knob. Then the the keeper 'and ythe buffer ingb'y its Contact -with vthev door j amb. 'A From t-he foregoing description taken in ily 'apparent fthat I have provided a safety y. fattalchnent Awhich Acan readily be installed upon various typesof doors, *and anfattach- -mnt which V'is simple in construction, posiuve, rr

' *It viste-be `understood that the formfofmy vSIS kirventi'on herewith Vshown, and described, is toibel ltakenjas a preferred example of the `rsamegand that variouschang'es in the's'hape, sizeand'arrangement'of. parts may loe resorted @to 'without departing from Ythe spirit of the invention or the scope of -the sub- Aj oined claimsf Y' kl. 'Afsa'f'ety device Ifor `doors comprising "a casing mounted .on the side of Ia door'in cls'efpr'oximity to vthe `door knob andv its '-fspindle,v an operating a'rm disposed within said casing and'havingr oneextremity thereof mounted on the spindle and rotatable therewith,v a longitudinally vmovable rod ha-V- 'ing pivotal connection at oneextremity with Y said arm and having a buier member mountjthedoor nanbe readily latched by Y Y operatidn", and 'exceedingly service- K Having" thus `described my invention, I'

"claim:

by 'said spindle and rotatable'therewith, a

Asafetydevice for doors comprising .f1 v casing mounted on the side of a door in close Tod connected at "one extremity to said arm, y Y v fa 1buffer carried on 'the opposite yextremity 'of said rod, and tension meanscarried by said rod and ladapted 'to throwthe buffer into an operative position.

3. A safety device for doo'rs comprising a casing mounted on the side of a door in' close proximity `to al door knob and its spindle, saidcasing having formed therein a graduated channel and -a straightohannel orm- Y* ing f-a shoulder, a base 'plate fixed to said door and vadapted to receive said casing thereon, an arm carried vby the'spindle and rotatable -th`erewith,a rod having a collar formed thereon vand connected fagt lone extremityjto said arm, said rod provided Vwith a collar, a buffer-positioned onthe opposite `extremityof said rodi'and tension means carried by'said 'rod' and adapted to throw said buffer into an operative position,{said tensionmeans having vits 'degree of expansion limited bythe ycollar on 'said rod andsaid tuner;l 1 l I4.- A safetydevicejfor doors comprising a `casi-ng, mounted' jon the side 'of'. door in' close proximity to a doorv knob and its square Spindler-an arm 'carried by 'the'spindle vand rotatable therewith said larm terminatingk vat onel end in enlarged aperturedportion-V adapted to, straddle the u spindle andv termi-r nating at the opposite end inY a bifurcatedextremity, means carried on the spindle rfor kallowing lateral movement of said arrnwithy1n said casing, la rod connected lat one end to said arm and adaptedior longitudinal move ment within said casing upon lateral-move vment-of lsaidarm, abutfer positionedonthe `opposite. endlofsaid rod', and tension means encircling said rod, and adapted to v'throw vsaid buffer vinto an extended position.

signature ELLER.

'Tn testimony whereof l` afiix In.

, ABE 

